Ever since these fry were born, some of them have black edges around their fins. It has not gotten worse, and they have been active and healthy.

I called a friend who breeds swordtails now and then, and he said that black edges on fins are a sign of recent swordtail genetics. This would make sense, since the fry are platy/swordtail hybrids.. whoops.

The ammonia levels were apparently high (.5 -1), but since the fry have been alive and well for almost a week, and the shrimp are as active as always, and I did a 25% water change twice this week to make sure. So, I think the ammonia reading may have been wrong.

Help would be greatly appreciated!

Madilyn

10-12-2009 03:27 PM

Do you have pics of them?

kald

10-12-2009 05:39 PM

Nope, my camera is broken and takes really poor quality pictures now for some reason.

Just imagine a normal fry with black edges on their fins. One of the fry has this same marking, except in a mickey mouse type pattern around it's tail.

kald

10-19-2009 06:42 PM

Update.

The black colouration has not increased or decreased. The majority of the swordtail fry are turning a slight blue tinge! It looks great. My swordtail must have crossed with my blue tux platy.